The 6MB/E-350/U40-DE-S10W from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 323.5 to 376.5 MHz, Bandwidth 53 MHz (1dB), Center Frequency 350 MHz, Insertion Loss 3.14 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 6MB/E-350/U40-DE-S10W can be seen below.